Brand Name: DOWSIL™ EA-9187LH Conformal Coating
Package Size: Available in 18 kg pails.
Shelf Life: Specific shelf life information is not provided in the available sources
1. Product Overview
DOWSIL™ EA-9187LH Conformal Coating is a one-part, clear, medium-viscosity, solventless silicone coating designed to protect printed circuit boards (PCBs) and sensitive electronic components. It cures at room temperature with optional heat acceleration and includes a UV indicator for inspection purposes. The coating is UL 746E qualified, ensuring compliance with industry safety standards.
2. Applications
This conformal coating is suitable for use in the lighting, industrial, and automotive sectors. It provides protective coverage for both rigid and flexible PCBs, safeguarding sensitive components and accommodating fine-pitched designs.
3. Typical Properties
| Property | Unit | Value |
|---|---|---|
| Appearance | — | Clear |
| Viscosity | mPa·s | 442 |
| Skin Over Time at 25°C | minutes | 7 |
| Specific Gravity (Uncured) | — | 0.98 |
| Non-Volatile Content | % | 97 |
| Durometer Hardness | Shore A | 21 |
| Tensile Strength | MPa | 0.25 |
| Elongation | % | 100 |
| Unprimed Lap Shear (Aluminum) | MPa | 0.24 |
| Dielectric Strength | kV/mm | 16.61 |
| Volume Resistivity | ohm·cm | 1.62 × 10¹⁵ |
| Dielectric Constant at 100 Hz | — | 1.76 |
| Dissipation Factor at 100 Hz | — | 0.02 |
| Dielectric Constant at 100 kHz | — | 1.73 |
| Dissipation Factor at 100 kHz | — | 0.001 |
| UL Flammability Classification | — | 94 V-0 |
| Agency Listing | — | UL 746E |
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